Naoto Date is the protagonist of the anime series 'Tiger Mask.' He starts as a young professional wrestler who becomes known internationally as the masked character Tiger Mask. Originally trained by the villainous Tiger's Den, he rebels against them to become a hero for children and a champion of justice in the wrestling world. Naoto's journey is marked by his struggle to balance his fierce fighting style with his sense of morality, as he takes on various opponents to protect the weak and uphold the honor of wrestling.